135879117844 has 6 divisors (see below), whose sum is σ = 237788456234. Its totient is φ = 67939558920.

The previous prime is 135879117833. The next prime is 135879117851. The reversal of 135879117844 is 448711978531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 129303529744 + 6575588100 = 359588^2 + 81090^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16984889727 + ... + 16984889734.

Almost surely, 2^135879117844 is an apocalyptic number.

It is an amenable number.

135879117844 is a deficient number, since it is larger than the sum of its proper divisors (101909338390).

135879117844 is a wasteful number, since it uses less digits than its factorization.

135879117844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33969779465 (or 33969779463 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 58.

The spelling of 135879117844 in words is "one hundred thirty-five billion, eight hundred seventy-nine million, one hundred seventeen thousand, eight hundred forty-four".